Abstract
It is expected that the welding hardfacing of continuous casting rolls has better welding performance and higher wear resistance. A new type of submerged-arc hardfacing flux-cored wire has been developed through nitrogen replacing part of carbon and addition of the nitrogen-fixing elements of niobium and titanium. And microstructure, degree of hardness and high-temperature wear resistance of its deposited metal samples were also investigated. It is found that the microstructure is martensite, residual austenite and carbonitride precipitates. As a result, the hardfacing metal with homogeneous distribution of very fine carbonitride particles had high hardness and excellent wear-resisting property during high-temperature wear, which could significantly extend the service life of continuous casting rolls.
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Foundation Item: Item Sponsored by National Natural Science Foundation of China (51101050); Fundamental Research Funds for Central Universities of China (2009B30214); Natural Science Foundation of Jiangsu Province of China (BKZ011257)
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Yang, K., Zhang, Zx., Hu, Wq. et al. A New Type of Submerged-Arc Flux-Cored Wire Used for Hardfacing Continuous Casting Rolls. J. Iron Steel Res. Int. 18, 74–79 (2011). https://doi.org/10.1016/S1006-706X(11)60120-9
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DOI: https://doi.org/10.1016/S1006-706X(11)60120-9